JP5620145B2 - Packaging box - Google Patents

Description

  The present invention relates to a packaging box for packaging foods such as confectionery and articles such as daily necessities.

  Conventionally, various forms of packaging boxes for packaging foods such as confectionery and articles such as daily necessities have been provided, and as one of them, a box body having an open top, and the box body And a lid provided so as to be foldable on the opening side at the boundary with the box body.

  In such a packaging box, an article is accommodated in the box body from the opening of the box body, and the lid is folded to the opening side of the box body to close the opening of the lid body. As described above, this type of packaging box generally has a lid that extends from the upper end of the box body and can be bent at the boundary with the box, and is generally made of paper sheet material or resin. The sheet material is cut into a predetermined shape (a shape in which the box main body and the lid are integrally developed), and then a necessary portion is bonded and then a necessary portion is bonded.

  By the way, a packaging box for wrapping merchandise, gifts, and the like may be required to have an appearance design. For this reason, this type of packaging box attracts the interest of consumers and people who receive gifts (hereinafter referred to as consumers, etc.) by changing the form of the box body from a general form (cube or cuboid). There is something like that. The box body of such a packaging box includes a bottom portion formed in a polygonal shape such as a triangle or a pentagon, and a plurality of divided wall portions that are connected to and stand up on each of the linear sides that define the outer periphery of the bottom portion. The both side ends of each divided wall portion are connected to the side ends of another adjacent divided wall portion.

  As a result, the packaging box having the above-described configuration is characterized in the appearance of the box body because the plurality of dividing wall portions continuously form a peripheral wall in a plan view polygonal shape (polygonal cylindrical shape) in the circumferential direction. (For example, see Patent Document 1).

Utility Model Registration No. 3117095

  By the way, as described above, the packaging box having the above structure is formed in a polygonal shape with respect to the box body (the bottom and the peripheral wall). However, since the lid is flat, there is a limit to attract the interest of consumers. In other words, the packaging box having the above-described configuration is in the form in which the lid with the opening of the box body closed at the uppermost position at the time of display or handing over. In some cases, the percentage of consumers or the like recognizing a planar lid is higher than the characteristic form of the box body, and the interest of consumers or the like may be reduced.

  In particular, when displayed on a showcase, display shelf, etc., the consumer often looks down on the product (packaging box), so the characteristic form of the box body is the consumer's view. In some cases, it has become difficult to enter, and consumers cannot be motivated to purchase (attract interest).

  In view of this, the present invention assumes that a box main body that accommodates articles and a lid that closes the opening of the box main body are formed continuously, so that the decorativeness is provided by the uppermost lid that is easily visible to consumers and the like. It is an object to provide a packaging box that can be increased.

The packaging box according to the present invention has a box body opened at the top, and extends from the upper end of the box body, and is bent toward the opening side by a first folding line set on the boundary with the box body. The box body and the lid are formed of a flexible sheet material, and the box body defines a bottom portion having a regular polygonal shape in plan view and an outer periphery of the bottom portion. A packaging box comprising a plurality of divided wall portions that are connected to each of the straight sides and are erected, and wherein the plurality of divided wall portions are continuous in the circumferential direction to define a region having a regular polygonal shape in plan view. The lid is composed of a plurality of divided lid portions arranged corresponding to the respective divided wall portions, and each divided lid portion is formed in a square shape and connected to the upper end of the divided wall portion corresponding to one side. Connected to the adjacent divided lid part and continuous in the circumferential direction, to the proximal end connected to the divided wall part Kicking the circumferential second bend line connecting the center of the circumferential direction at one end and a tip at the peers are configured in a triangular shape in by the boundary of said second bend lines at one end in the circumferential direction And a trapezoidal region, the triangular region is set to be thicker than the trapezoidal region, and each divided lid is placed on the opening side along the first folding line. A plurality of divided lid portions are configured to close the opening by folding the adjacent divided lid portions outward along a second folding line while being bent.

  According to the packaging box according to the present invention, the plurality of divided lid portions whose openings of the box body are closed are sequentially overlapped in the circumferential direction. More specifically, the packaging box according to the present invention is composed of a plurality of divided lid portions in which a lid for closing the opening of the box body is arranged corresponding to each divided wall portion, and each divided lid portion is rectangular. Since the one side is connected to the upper end of the corresponding divided wall portion and connected to the adjacent divided lid portion and is continuous in the circumferential direction, the lid formed of a plurality of divided lid portions is opened. It becomes a polygonal cylinder shape until it is closed.

  And each division | segmentation cover part can be bend | folded with the 1st bending plan line set on the boundary with a box main body, and is the same in the said circumferential direction in the base end connected with the division | segmentation wall part. Since it is possible to bend at a second planned bending line connecting one end and the center in the circumferential direction at the tip, adjacent divided cover parts are bent while folding each divided cover part to the opening side along the first bent planned line. When folded back to the outside at the second folding line, each divided lid part is folded to the outside of the adjacent divided lid part on one side in the circumferential direction with the opening of the box body (circumferential wall) closed. It will be in the state where it overlapped with the upper side of ().

  As a result, a plurality of bowl-shaped portions where the adjacent divided lid portions overlap each other are formed in the circumferential direction, and as a result, the lid (a plurality of divided lid portions) whose opening is closed is like a windmill or a flower (petal). Will be made. Therefore, the packaging box is enhanced in decorativeness by the lid at the top which is easily visible to the consumer, and the consumer can be interested not only by the form of the box body but also by the form of the lid.

  As one aspect of the present invention, the lid may be configured such that a plurality of the divided lid portions closes the opening and the central portions in the circumferential direction at the distal ends of the divided lid portions interfere with each other. preferable. If it does in this way, a plurality of division lid parts which closed the opening of the box body will each stick in the diameter direction of a peripheral wall, and a lid (each division lid part) will rise up carelessly, and will open the opening of a box body. Opening can be prevented. That is, since the packaging box is a box body and a lid formed from a sheet material, when the lid (divided lid portion) is bent at the first folding line and the second folding line, A restoring force (force to return from the folded state to the original state) due to its own rigidity acts.

  Therefore, if the lid (each divided lid portion) is simply bent, the lid (divided lid portion) that closes the opening of the box body may open due to the restoring force, but the opening may be opened. As described above, in the state where the plurality of divided lid portions close the opening, the central portions in the circumferential direction at the distal ends of the respective divided lid portions interfere with each other, thereby restricting rising of the lid (multiple divided lid portions). Can do.

  In this case, each divided lid portion is in a state where the distal end side is inclined to the bottom side with respect to the base end in a state where the opening is closed, and in the middle of the bending that is parallel or substantially parallel to the bottom portion, It is preferable that the length from the proximal end to the distal end connected to the dividing wall portion is set so that the central portions interfere at the maximum. In this way, when each divided lid portion is folded to the opening side along the first folding planned line so as to close the opening of the box body at each divided lid portion, when the respective divided lid portions are parallel or substantially parallel to the bottom portion, The central portions at the front end interfere with each other at the maximum, but since the lid (divided lid portion) is made of a flexible sheet material, each division occurs when the central portions interfere with each other at the maximum. As a result of the lid portions being bent and interference being reduced, the opening of the box body can be closed by bending each of the divided lid portions so that the distal end side is inclined to the bottom side rather than the base end.

  In the state where the lid closes the opening of the box body, the degree of interference between the divided lid portions is lower than the middle of the folding where the divided lid portions are parallel or substantially parallel to the bottom portion. The portion does not attempt to return to a posture in which the degree of interference is maximized (a posture that is parallel or substantially parallel to the bottom portion). Thereby, the division | segmentation cover part which closed the opening of the box main body will be in the locked state, and it will prevent opening carelessly.

  Thus, although the division | segmentation lid part will be in the locked state, in order to open a lid | cover (opening of a box main body), it is only necessary to pull the above-mentioned hook-shaped part outward (upward). Even at this time, when the divided lid portion is parallel or substantially parallel to the bottom portion, the central portions at the tips of each other will interfere with each other at the maximum, but as in the case of closing the lid, the lid (divided lid portion) Since the interference is eased by the bending, the lid (each divided lid portion) can be returned to the open state.

  In this case, each divided lid portion is set to have the same length from the base end to the tip end, and the length is parallel or substantially parallel to the bottom portion and in a direction perpendicular to the upper end of the divided wall portion. It is preferably set to 100% to 135% of the distance from the upper end of the dividing wall portion to the centroid of the polygonal region defined by the peripheral wall. In this way, when closing the opening of the box body, the lid (divided lid part) can be bent smoothly, and the lid (dividing lid part) closing the opening of the box body is raised (opening the opening) Can be reliably prevented.

  As described above, according to the packaging box of the present invention, it is easy to enter the eyes of consumers, etc., on the premise that a box main body for storing articles and a lid for closing the opening of the box main body are continuously formed. An excellent effect that the decorativeness can be enhanced by the lid at the top can be obtained.

FIG. 1 is an explanatory view of a packaging box according to an embodiment of the present invention, in which (a) shows a plan view of a state in which a lid is opened, and (b) shows an X arrow in (a). A perspective view is shown, and (c) shows a Y arrow view of (a). FIG. 2: shows the top view of the expansion | deployment sheet | seat for creating the packaging box based on the embodiment. 3A and 3B are explanatory views of the packaging box according to the embodiment, wherein FIG. 3A is an overall perspective view showing a state in which the opening of the box body is closed with a lid, and FIG. 3B is a box body with the lid. The top view of the state which closed the opening of is shown. FIG. 4 is an explanatory view of a packaging box according to another embodiment of the present invention (a packaging box in which the bottom portion is formed in a regular triangle shape and the peripheral wall is formed in a regular triangular tube shape), and (a) The top view of the state which open | released the lid | cover is shown, (b) shows the Y arrow directional view of (a), (c) shows the top view of the state which closed the opening of the box main body with the lid | cover. FIG. 5 is an explanatory view of a packaging box according to another embodiment of the present invention (a packaging box in which the bottom portion is formed in a square shape and the peripheral wall is formed in a regular rectangular tube shape), and (a) The top view of the state which open | released the lid | cover is shown, (b) shows the Y arrow directional view of (a), (c) shows the top view of the state which closed the opening of the box main body with the lid | cover. FIG. 6 is an explanatory view of a packaging box according to still another embodiment of the present invention (a packaging box having a bottom portion formed in a regular pentagon shape and a peripheral wall formed in a regular pentagonal cylinder shape). Shows a plan view with the lid open, (b) shows a view from arrow Y in (a), and (c) shows a plan view with the lid closing the opening of the box body. . FIG. 7 is an explanatory diagram of a packaging box according to still another embodiment of the present invention (a packaging box having a bottom portion formed in a regular heptagon shape and a peripheral wall formed in a regular heptagonal cylinder shape). Shows a plan view with the lid open, (b) shows a view from arrow Y in (a), and (c) shows a plan view with the lid closing the opening of the box body. . FIG. 8 is an explanatory view of a packaging box according to still another embodiment of the present invention (a packaging box in which the bottom portion is formed in a regular octagon shape and the peripheral wall is formed in a regular octagonal cylinder shape). Shows a plan view with the lid open, (b) shows a view from arrow Y in (a), and (c) shows a plan view with the lid closing the opening of the box body. .

  Hereinafter, a packaging box according to an embodiment of the present invention will be described with reference to the accompanying drawings.

  As shown in FIGS. 1A to 1C, the packaging box according to the present embodiment includes a box main body 2 having an upper opening, and extends from the upper end of the box main body 2. And a lid 3 provided so as to be bendable on the center side of the opening at a first bend line L1 set on the boundary.

  The box body 2 and the lid 3 are formed of a flexible sheet material. In the present embodiment, the packaging box 1 has a box body 2 and a lid 3 that are formed integrally (continuously), and is a sheet of paper material cut into a predetermined shape (expanded sheet S to be described later: 2), and a necessary portion is connected by bending. In addition, suppose that the production | generation method of the packaging box 1 which concerns on this embodiment, and the expansion | deployment sheet | seat S used for creation of this packaging box 1 are mentioned later.

  The box body 2 includes a bottom portion 20 having a regular polygonal shape in plan view, and a plurality of divided wall portions 21... Standing up connected to each of straight sides defining the outer periphery of the bottom portion 20. The box body 2 according to the present embodiment has a bottom portion 20 formed in a regular hexagonal shape in plan view, and accordingly, includes six dividing wall portions 21.

  In the box body 2 according to the present embodiment, each divided wall portion 21 is formed in a side view shape (square or rectangular shape), and one side of each divided wall portion 21. It is connected to one side of a straight line constituting the outer shell. Each of the divided wall portions 21 has a lower end (the one side) set to have the same length as a single side constituting the outer periphery of the bottom portion 20, and the entire length of the lower end is the entire length of the one side of the bottom portion 20. It is connected to the. And each division wall part 21 ... is formed in the rectangular shape which makes a square shape or a longitudinal direction according to the size (depth) of the box main body 2. As shown in FIG.

  The plurality of dividing wall portions 21 constitute a peripheral wall 22 having a polygonal shape in plan view corresponding to the outer peripheral shape of the bottom portion 20 continuously in the circumferential direction. That is, each division wall part 21 ... is connected to the side edge of another division wall part 21 ... which both side ends (both side ends in the circumferential direction) adjoin, and constitutes the peripheral wall 22 of a polygonal cylinder shape. . Thereby, the peripheral wall 22 of the box body 2 is formed with a ridge line extending in the vertical direction at the connection position between the divided wall portions 21. As described above, the box body 2 according to the present embodiment has the hexagonal shape of the bottom portion 20 as described above. Therefore, the peripheral wall 22 has a hexagonal cylindrical shape, and a ridge line extending in the vertical direction is formed on the outer periphery of the peripheral wall 22. Six are formed at intervals in the direction.

  The said lid | cover 3 is comprised by the some division | segmentation cover part 30 ... arrange | positioned corresponding to each division | segmentation wall part 21 .... Each divided lid 30 is formed in a square shape (square or rectangular), and one side is connected to the upper end of the corresponding divided wall 21. In this embodiment, the length of the base end (the one side) of each split lid portion 30 is set to be the same as the length of the upper end of the split wall portion 21, and the total length of the base end is the split wall portion 21. It is connected to the full length of the upper end of….

  Moreover, each division | segmentation lid | cover part 30 ... is connected to the adjacent division | segmentation lid | cover part 30 (division lid | cover part 30 adjacent in the circumferential direction), and is continuing in the circumferential direction. That is, each divided lid portion 30 is connected to a side end of another divided lid portion 30 adjacent to both side ends (both side ends in the circumferential direction). Thereby, the lid 3 before closing the opening of the box body 2 has a polygonal cylindrical shape by the plurality of divided lid portions 30... And a ridge line extending in the vertical direction at the connection position between the divided lid portions 30. Is formed.

  And as for the packaging box 1 which concerns on this embodiment, the 1st bending plan line L1 is set on the boundary of the lid | cover 3 and the box main body 2 as mentioned above. That is, the packaging box 1 has a first planned bending line that becomes a reference when the divided lid portion 30 is bent to the opening side of the box body 2 on the boundary between the divided wall portion 21 and the divided lid portion 30. L1 is set. Therefore, the packaging box 1 has a first bent planned line L1 that coincides with the upper ends of the divided wall portions 21 and the base ends of the divided lid portions 30 for each divided lid portion 30.

  The packaging box 1 according to this embodiment has one end and a distal end that are the same in the circumferential direction (the circumferential direction of the annular lid 3) at the base end of the divided lid portion 30. The second scheduled bending line L2 connecting the center in the circumferential direction is set. As a result, each of the divided lid portions 30... Has a triangular area (hereinafter referred to as a triangular area) A1 on one end side in the circumferential direction with the second bending planned line L2 as a boundary, and a base extending from one end to the other end. It is partitioned into a shape area (hereinafter referred to as trapezoid area) A2.

  The packaging box 1 according to the present embodiment is set such that the triangular area A1 is thicker than the trapezoidal area A2 among the areas A1 and A2 defined by the second folding line L2 in each divided lid portion 30. Has been. That is, in the packaging box 1, the above-described lid connecting paste margin 50 '... connected to one of the divided lid portions 30 ... in order to connect the adjacent divided lid portions 30 ... is divided into the one division. The other divided lid portions 30 adjacent to the lid portions 30 are affixed to the triangular area A1 in a matching state. Thereby, as for each division | segmentation cover part 30 ..., triangular area | region A1 is thicker than trapezoid area | region A2.

  And the packaging box 1 which concerns on this embodiment WHEREIN: Each division | segmentation lid | cover part 30 ... is bent by the 1st bending plan line L1, and the division | segmentation lid part 30 ... adjacent is bent by the 2nd bending plan line L2. The plurality of divided lid portions 30 are configured to close the opening by folding back outward.

  In the present embodiment, each of the divided lid portions 30 is in a state of being bent in a state where the distal end side is inclined to the bottom 20 side with respect to the base end in a state where the opening is closed and is parallel or substantially parallel to the bottom portion 20. The length from the proximal end to the distal end is set so that the central portions at the distal ends interfere with each other at the maximum.

  That is, each of the divided lid portions 30 is set to have the same length from the base end to the distal end, and the length L is parallel or substantially parallel to the bottom portion 20 and the upper end of the divided wall portion 21. 100% to 135% (more preferably, 105% to 120%) of the distance D from the upper end of the divided wall portion 21 in the orthogonal direction to the centroid C of the polygonal region defined by the peripheral wall 22 The

  The packaging box 1 according to the present embodiment is as described above. Next, in conjunction with the description of the development sheet for creating the packaging box 1 having the above-described configuration, the expansion sheet is used for packaging with the above-described configuration. A method for creating the box 1 will be described.

  The spread sheet is made of a flexible sheet material. That is, the spread sheet is formed by cutting a paper sheet material or a resin sheet material into a predetermined shape (in the present embodiment, the shape described below). The development sheet according to the present embodiment is formed by cutting cardboard in order to create a paper packaging box 1.

  As shown in FIG. 2, the unfolded sheet extends from a bottom forming area 20 ′ having a regular polygonal shape in plan view, which becomes the bottom 20 of the box body 2, and from a plurality of sides that define the outline of the bottom forming area 20 ′. , A plurality of wall forming regions 21 ′ to be the divided wall portions 21... And a plurality of lid forming regions 30 ′ to be the divided lid portions 30. ..., and a plurality of wall connecting paste margins 40 'extending from one side end in the circumferential direction of the bottom forming area 20' in each wall forming area 21 '..., and each lid forming area 30 ′... A plurality of lid connecting paste margins 50 ′ extending from one side end in the circumferential direction of the bottom forming region 20 ′ at 30 ′.

  In the present embodiment, the bottom forming region 20 'is formed in a regular hexagonal shape in plan view. On the other hand, each of the wall forming regions 21 'is formed in a square shape and extends over the entire length of each side that defines the outline of the bottom forming region 20'. That is, each of the wall forming regions 21 ′ is set to have the same width as the side of the bottom forming region 20 ′, and one end in the extending direction perpendicular to the width direction defines the outline of the bottom forming region 20 ′. Connected to the edge. The wall forming regions 21 'are set to have the same length in the extending direction.

  Each of the lid forming regions 30 'is formed in a square shape and extends over the entire length of the other end in the extending direction of the wall forming regions 21'. That is, each lid forming region 30 '... is set to the same width as the wall forming region 21' ..., and one end in a direction orthogonal to the width direction is connected to the other end of the wall forming region 21 '... Has been.

  Each of the wall connecting glue margins 40 'extends from the entire length of one side end of the wall forming region 21'. In the present embodiment, since the bottom forming region 20 ′ is formed in a hexagonal shape, the interval between the wall forming regions 21 ′... Adjacent in the circumferential direction becomes narrower toward the bottom forming region 20 ′. The connecting margin 40 '... is tapered (triangular) corresponding to the change in the interval between the wall forming regions 21' ....

  Each of the lid connecting glue margins 50 'extends from the entire length of one end of the lid forming region 30'. The lid connecting glue margins 50 '... According to the present embodiment are formed in a triangular shape corresponding to the triangular area A1. That is, the packaging box 1 is a second bent connecting the one end that is in the same direction in the circumferential direction (the circumferential direction of the ring-shaped lid 3) at the base end of the divided lid portion 30. Since the rectangular divided lid portion 30 is divided into a triangular area A1 and a trapezoidal area A2 by the planned line L2, the lid connecting paste margin 50 'which is a part of the triangular area A1 is a lid portion. The front edge of the outer edge from the boundary between the linear outer edge that is in line with (the same as) the front edge of the formation area 30 '..., and the lid formation area 30' ... and the wall formation area 21 '... And an inclined edge inclined toward the. The adhesive amount 50 ′ for connecting the lid portion has a maximum extension amount from the lid forming region 30 ′ (the length from the boundary with the lid forming region 30 ′ to the intersection of the outer edge and the inclined edge). It is set to a half of the length in the width direction of the lid portion formation region 30 '.

  Then, in order to create the packaging box 1 from the developed sheet 1 ′ having the above-described configuration, as shown in FIGS. 1A to 1B, each wall portion forming region 21 ′ is replaced with a bottom portion forming region 20 ′. Are bent in the same direction so as to form a ridgeline at the boundary of the wall (in this embodiment, the dividing wall portion 21 (wall portion forming region 21 ′) is perpendicular to or substantially perpendicular to the bottom portion 20 (bottom shape region 20 ′). Standing up at right angles). As a result, each wall portion connecting margin 40 'extending from one end of the wall portion forming region 21' ... overlaps with another wall forming region 21 'adjacent to the wall forming region 21'. In order to achieve this, the wall connecting glue margins 40 'are bonded to the overlapping wall forming regions 21'. At this time, each of the wall connecting glue margins 40 'is bent so as to form a ridge line at the boundary with the wall forming region 21' ... where the wall connecting glue margins 40 'are extended. As a result, the plurality of wall forming regions 21 ′... Become a plurality of divided wall portions 21.

  Further, since the lid forming regions 30 ′ are continuous with the wall forming regions 21 ′, the wall forming regions 21 ′ are bent at the boundary with the bottom forming region 20 ′ as described above. In an upright state, each lid portion connecting paste allowance 50 ′ extending from one side end of the lid portion forming region 30 ′ is another lid portion forming region 30 adjacent to the lid portion forming region 30 ′. '... overlapped with. Then, the lid connecting adhesive allowances 50 'are bonded to the overlapping wall forming regions 21'. At this time, each of the lid connecting glue margins 50 'is bent so as to form a ridge line at the boundary with the lid forming region 30' ... from which the lid connecting glue margins 50 'are extended. As a result, the plurality of lid portion forming regions 30 '... become a plurality of divided lid portions 30 ... continuous in the circumferential direction, and the packaging box 1 having the above-described configuration is completed.

  Then, the article is packaged in the packaging box 1. Specifically, an article to be packaged is accommodated in the box body 2 from the upper opening of the box body 2. Then, the divided lid portions 30... Are folded outward at the second bent planned line L2 while the divided lid portions 30. In this embodiment, since the triangular area A1 of each divided lid portion 30 is thicker than the trapezoidal area A2 (the lid connecting glue margin 50 'is adhered), the triangular area A1 and There is an abrupt difference in thickness on the second bent line L2 that is the boundary with the trapezoidal area A2, and each divided lid 30 can be smoothly folded outward along the second bent line L2. . That is, the divided lid portions 30 can be easily folded back along the edges of the lid portion connecting glue margins 50 'corresponding to the second bent line L2.

  In this way, when each divided lid portion 30 is folded outward along the second folding planned line L2 while the divided lid portions 30 are folded toward the opening side along the first folding planned line L1, FIG. ) And FIG. 3 (b), the plurality of divided wall portions 21 that close the opening of the box body 2 are sequentially overlapped in the circumferential direction. That is, when each of the divided lid portions 30 is folded outward along the second folding planned line L2 while the respective divided lid portions 30 are folded outward along the first folding planned line L1, the respective divided lid portions 30. In a state in which the opening of the box body 2 (the peripheral wall 22) is closed, the box body 2 is overlapped on the upper side of the portion folded back to the outside of the adjacent divided lid portion 30 on one side in the circumferential direction (in a bowl shape). As a result, a plurality of bowl-shaped portions where the adjacent divided lid portions 30, 30 overlap each other are formed in the circumferential direction. As a result, the lid 3 (the plurality of divided lid portions 30. (Petal) will be formed.

  Therefore, the packaging box 1 is enhanced in decorativeness by the lid 3 at the uppermost portion that is easily visible to the consumer, and the consumer is interested not only by the form of the box body 2 but also by the form of the lid 3. be able to.

  Further, the packaging box 1 according to the present embodiment has a state in which a plurality of divided lid portions 30 ... closes the opening, and the central portions in the circumferential direction at the tips of the divided lid portions 30 interfere with each other. The plurality of divided lid portions 30 with the openings of the box body 2 closed close to each other in the radial direction of the peripheral wall 22, and the lid 3 (each divided lid portion 30... Can be prevented from being opened. That is, in the packaging box 1, since the box body 2 and the lid 3 are formed of a sheet material, the lid 3 (divided lid portion 30) is made to be the first folding line L1 and the second folding schedule. When it is bent along the line L2, a restoring force due to its own rigidity (a force to return from the bent state to the original state) acts.

  Therefore, by simply bending the lid 3 (each divided lid portion 30...), The lid 3 (divided lid portion 30...) Closing the opening of the box body 2 can be opened by the restoring force to open. However, as described above, when the plurality of divided lid portions 30 are closed, the center portions in the circumferential direction at the distal ends of the respective divided lid portions 30 interfere with each other so that the lid 3 ( The rising of the plurality of divided lid portions 30...) Can be regulated.

  In particular, the split lid portion 30 according to the present embodiment is bent such that the distal end side is inclined to the bottom 20 side with respect to the base end with the opening closed, and is parallel or substantially parallel to the bottom portion 20. Since the length L from the base end to the tip is set so that the central portions at the tip of each other interfere with each other at the middle, a plurality of divided lid portions 30 with the opening of the box body 2 closed. Can be locked.

  That is, the lid 3 with the opening of the box body 2 closed (the divided lid portion 30 whose tip side is inclined toward the bottom portion 20 with respect to the base end) has a higher degree of interference than in the middle of bending that is parallel or substantially parallel to the bottom portion 20. Since it is in a low state, it does not return to a posture in which the degree of interference is maximized (a posture that is parallel or substantially parallel to the bottom portion 20), and a plurality of divided lid portions 30 that close the opening of the box body 2 ... can be locked.

  In addition, as described above, each of the divided lid portions 30... Has maximum flexibility while the central portions at the tip of each other interfere with each other in the middle of being bent parallel to or substantially parallel to the bottom portion 20. Since it is composed of a sheet material (thick paper), when the central portions interfere with each other at the maximum, the front end portion of each divided lid portion 30 is pressed (pushed) toward the bottom portion 20 side, whereby each divided lid portion 30. ... bends to a posture inclined forward and downward from a state of being parallel or substantially parallel to the bottom portion 20.

  In the present embodiment, the length L from the base end to the tip end of each divided lid portion 30 is set to the same length, and the length L is parallel or substantially parallel to the bottom portion 20 and the divided wall portion. 21 to 100% to 135% (more preferably 105% to 120%) of the distance D from the upper end of the dividing wall portion 21 to the centroid C of the polygonal area defined by the peripheral wall 22 in the direction orthogonal to the upper end of 21 ... ), The lid 3 (divided lid portion 30...) Can be smoothly folded when the opening of the box body 2 is closed, and the lid 3 (divided lid portion) having the opening of the box body 2 closed. 30 ...) (opening of the opening) can be reliably prevented.

  Thus, the packaging box 1 according to the present embodiment is in a state where the divided lid portion 30 is locked, but in order to open the lid 3 (opening of the box body 2), the above-described bowl-shaped portion is used. It is only necessary to pull outward (upward). Even at this time, when the divided lid portions 30... Are parallel or substantially parallel to the bottom portion 20, the central portions at the tips of each other interfere to the maximum, but the lid 3 ( Since the interference is eased by the bending of the divided lid portion 30), the lid 3 (each divided lid portion 30) can be returned to the open state.

  In addition, this invention is not limited to the said embodiment, Of course, it can change suitably in the range which does not deviate from the summary of this invention.

  In the above embodiment, the bottom portion 20 is formed in a regular hexagonal shape in plan view, and accordingly, the peripheral wall 22 and the lid 3 before closing the opening also have a hexagonal cylindrical shape. However, the present invention is not limited to this. For example, as shown in FIGS. 4 (a) and 4 (b), the bottom 20 is formed in a regular triangle shape in plan view, and accordingly, the peripheral wall 22 and the lid 3 before closing the opening are also in a triangular tube shape. As shown in FIGS. 5 (a) and 5 (b), the bottom 20 is formed in a square shape in plan view, and accordingly, the peripheral wall 22 and the lid 3 before closing the opening are also formed. You may make it make a square cylinder shape. Further, as shown in FIGS. 6A and 6B, the bottom portion 20 is formed in a regular pentagonal shape in plan view, and accordingly, the peripheral wall 22 and the lid 3 before closing the opening also form a pentagonal cylindrical shape. Alternatively, as shown in FIGS. 7 (a) and 7 (b), the bottom portion 20 is formed in a regular heptagonal shape in plan view, and accordingly the peripheral wall 22 and the lid 3 before closing the opening are also formed. A heptagonal cylinder may be formed, and as shown in FIGS. 8A and 8B, the bottom 20 is formed in a regular octagonal shape in plan view, and accordingly, the peripheral wall 22 and the opening are formed. The lid 3 before closing may also have an octagonal cylindrical shape.

  That is, as shown in FIGS. 4 to 8, the bottom portion 20 is formed in a regular polygonal shape in plan view, and accordingly, the peripheral wall 22 and the lid 3 before closing the opening may be formed in a polygonal cylindrical shape. Also in this case, each divided lid portion 30 is formed in a square shape, and one side is connected to the upper end of the divided wall portion 21, and the circumferential direction at the one end and the distal end that are the same in the circumferential direction at the proximal end. A second planned bending line L2 that connects to the center of each of the divided lid portions 30... Is bent at the opening side by a first bent planned line L1 set on the boundary line with the divided wall portions 21. The adjacent divided lid portions 30 are configured to be folded outward at the second folding line L2, so that the lids 3 (the plurality of lids 3) having the openings closed as shown in (c) of FIG. 4 to FIG. ) Of the divided lid portion 30) has a shape like a windmill or a flower (petal).

  Therefore, the packaging box 1 is enhanced in decorativeness by the lid 3 at the uppermost portion that is easily visible to the consumer, and the consumer is interested not only by the form of the box body 2 but also by the form of the lid 3. be able to.

  Further, as described above, even when the bottom portion 2 is formed in a regular polygonal shape and the peripheral wall 22 is formed in a regular polygonal cylindrical shape, the lid 3 is in a state in which the plurality of divided lid portions 30. Therefore, it is preferable that the circumferential center portions of the distal ends of the divided lid portions 30 interfere with each other, and the distal end side is closer to the proximal end in a state where the divided lid portions 30 close the opening. The length from the proximal end to the distal end is such that the central portions at the distal ends of each other interfere with each other in the middle of the bending that is inclined toward the bottom side and is parallel or substantially parallel to the bottom portion. More preferably, it is set.

  Each of the divided lid portions 30 is in a state where the distal end side is inclined to the bottom 2 side with respect to the base end in a state where the opening is closed, and in the middle of the bending that is parallel or substantially parallel to the bottom portion. In the case where the central portions are configured to interfere with each other at the maximum, as shown in (a) and (b) of FIG. 4 to FIG. 8, each of the divided lid portions 30. The length L from the base end to the tip end is set to the same length, and the length L is parallel or substantially parallel to the bottom portion 2 and in the direction perpendicular to the upper end of the split wall portion 21. The distance D is preferably set to 100% to 135% of the distance D from the upper end of the polygon to the centroid C of the polygonal region defined by the peripheral wall, more preferably set to 105% to 120% of the distance D. preferable.

  In the above-described embodiment, each of the divided lid portions 30 is in a state where the distal end side is inclined to the bottom 20 side with respect to the base end in a state where the opening is closed, and is in the middle of being bent parallel to or substantially parallel to the bottom portion 20. The length from the proximal end to the distal end is set so that the central portions at the distal ends interfere with each other at the maximum. However, the length is not limited to this, and each divided lid portion 30. The length from the proximal end to the distal end may be set so that the central portions at the distal ends interfere with each other by closing the opening in a state where the opening is parallel or substantially parallel to each other.

  That is, it is preferable that the lid 3 is configured such that the central portions in the circumferential direction at the tips of the divided lid portions 30 interfere with each other in a state where the plurality of divided lid portions 30 close the opening. However, the lid 3 (the divided lid portion 30...) Will not rise up with its own rigidity (restoring force) if the first folding planned line L1 and the second folding planned line L2 can be reliably creased. Therefore, in this case, it is not always necessary to cause the tips of the divided lid portions 30 to close the opening to interfere with each other.

  In the above embodiment, each of the dividing wall portions 21 stands upright at a right angle or substantially at a right angle with respect to the bottom portion 20. However, the present invention is not limited to this. For example, each of the dividing wall portions 21. You may make it stand in the state inclined to the outside or the inside with respect to 20. Also in this case, each divided lid portion 30 is formed in a square shape, and one side is connected to the upper end of the divided wall portion 21, and the circumferential direction at the one end and the distal end that are the same in the circumferential direction at the proximal end. A second planned bending line L2 that connects to the center of each of the divided lid portions 30... Is bent at the opening side by a first bent planned line L1 set on the boundary line with the divided wall portions 21. It goes without saying that the adjacent divided lid portions 30 are configured to be folded outward at the second folding line L2.

  In the above embodiment, the entire packaging box 1 is integrally formed with a single sheet material (deployed sheet 1 ′), but is not limited to this, for example, a sheet divided into each part is bonded together Of course, the packaging box 1 having the same aspect as the above embodiment may be formed. Moreover, the packaging box 1 is not limited to a paper-made one, and may be constituted by a resin-made sheet, for example. That is, the sheet material for producing the packaging box 1 may be any material as long as it has flexibility, and the material can be variously changed.

  In the above embodiment, the triangular region A1 of each divided lid portion 30 is made thicker than the trapezoidal region A2, and the thickness is abruptly changed on the second planned folding line L2, so that the divided lid portions 30 are outside. However, the present invention is not limited to this. For example, the second bending expected line L2 is formed by linearly forming a thinned portion, or intermittently cut so as to reduce the strength. (So-called perforation or the like) may be used. The same applies to the first bent planned line L1. Moreover, the 1st bending plan line L1 and the 2nd bending plan line L2 should just be able to make a user recognize a folding position, and may be the line drawn in the applicable location, and are attached by a fold. It may be a line.

  DESCRIPTION OF SYMBOLS 1 ... Packaging box, 1 '... Unfolding sheet, 2 ... Box main body, 3 ... Cover, 20 ... Bottom part, 20' ... Bottom part formation area, 21 ... Split wall part, 21 '... Wall part formation area, 22 ... Perimeter wall, 30 ... divided lid, 30 '... lid forming area, 40' ... wall connecting glue, 50 '... lid connecting glue, A1 ... triangular area, A2 ... trapezoid, L1 ... first bent Planned line, L2 ... Second folding planned line, S ... Unfolded sheet

Claims (4)

A box body having an upper opening, and a lid that extends from the upper end of the box body and that is foldable on the opening side along a first folding line set on the boundary with the box body. The box main body and the lid are formed of a flexible sheet material, and the box main body is connected to each of a bottom portion having a regular polygonal shape in plan view and a linear side defining an outer periphery of the bottom portion. A packaging box comprising a plurality of dividing wall portions standing upright and defining a region of a regular polygonal shape in plan view in which the plurality of dividing wall portions are continuous in the circumferential direction. Each divided lid part is formed in a square shape and one side is connected to the upper end of the corresponding divided wall part and connected to the adjacent divided lid part Is continuous in the circumferential direction, and is the same in the circumferential direction at the proximal end connected to the dividing wall portion. That one end and the circumferential direction in the tip second bend line is set connecting the central, a triangular area at and bordering said second bend line in the circumferential direction of the one end side, trapezoidal The divided lid portions that are adjacent to each other with the thickness of the triangular region being set to be larger than the thickness of the trapezoidal region and bending each divided lid portion toward the opening side along the first folding line A packaging box, wherein a plurality of divided lid portions are configured to close the opening by folding outwardly along a second folding line.   2. The packaging box according to claim 1, wherein the lid is configured such that a plurality of the central portions in the circumferential direction interfere with each other at the tip of each of the divided lid portions in a state where the plurality of divided lid portions close the opening. .   Each of the divided lid portions is in a state where the distal end side is inclined to the bottom side with respect to the base end in a state where the opening is closed, and the central portions at the respective distal ends are in the middle of being bent parallel to or substantially parallel to the bottom portion. The packaging box according to claim 2, wherein a length from the base end to the tip end connected to the dividing wall portion is set so that the maximum interference occurs. Each split lid is set to have the same length from the base end to the tip, and the length is parallel or substantially parallel to the bottom and the split wall in a direction perpendicular to the upper end of the split wall The packaging box according to claim 1 , wherein the packaging box is set to 100% to 135% of the distance from the upper end to the centroid of the polygonal region defined by the peripheral wall.

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